fixes for host gcc 4.6.1
[zpugcc/jano.git] / toolchain / binutils / ld / ldlex.l
blobaeac817c84f0ecb4d7e83b66cb657e7a14c82435
1 %{
3 /* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4    2000, 2001, 2002, 2003  Free Software Foundation, Inc.
6 This file is part of GLD, the Gnu Linker.
8 GLD is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
13 GLD is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GLD; see the file COPYING.  If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
21 02111-1307, USA.  */
24 This was written by steve chamberlain
25                     sac@cygnus.com
29 #include <stdio.h>
31 #ifdef MPW
32 /* Prevent enum redefinition problems. */
33 #define TRUE_FALSE_ALREADY_DEFINED
34 #endif /* MPW */
36 #include "bfd.h"
37 #include "sysdep.h"
38 #include "safe-ctype.h"
39 #include "bfdlink.h"
40 #include "ld.h"
41 #include "ldmisc.h"
42 #include "ldexp.h"
43 #include "ldlang.h"
44 #include <ldgram.h>
45 #include "ldfile.h"
46 #include "ldlex.h"
47 #include "ldmain.h"
48 #include "libiberty.h"
50 /* The type of top-level parser input.
51    yylex and yyparse (indirectly) both check this.  */
52 input_type parser_input;
54 /* Line number in the current input file.
55    (FIXME Actually, it doesn't appear to get reset for each file?)  */
56 unsigned int lineno = 1;
58 /* The string we are currently lexing, or NULL if we are reading a
59    file.  */
60 const char *lex_string = NULL;
62 /* Support for flex reading from more than one input file (stream).
63    `include_stack' is flex's input state for each open file;
64    `file_name_stack' is the file names.  `lineno_stack' is the current
65    line numbers.
67    If `include_stack_ptr' is 0, we haven't started reading anything yet.
68    Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid.  */
70 #undef YY_INPUT
71 #define YY_INPUT(buf,result,max_size) yy_input (buf, &result, max_size)
73 #define MAX_INCLUDE_DEPTH 10
74 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
75 static const char *file_name_stack[MAX_INCLUDE_DEPTH];
76 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];
77 static unsigned int include_stack_ptr = 0;
78 static int vers_node_nesting = 0;
80 static void yy_input (char *, int *, int);
81 static void comment (void);
82 static void lex_warn_invalid (char *where, char *what);
84 /* STATES
85         EXPRESSION      definitely in an expression
86         SCRIPT          definitely in a script
87         BOTH            either EXPRESSION or SCRIPT
88         DEFSYMEXP       in an argument to -defsym
89         MRI             in an MRI script
90         VERS_START      starting a Sun style mapfile
91         VERS_SCRIPT     a Sun style mapfile
92         VERS_NODE       a node within a Sun style mapfile
94 #define RTOKEN(x)  {  yylval.token = x; return x; }
96 /* Some versions of flex want this.  */
97 #ifndef yywrap
98 int yywrap (void) { return 1; }
99 #endif
102 %a 4000
103 %o 5000
105 CMDFILENAMECHAR   [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]
106 CMDFILENAMECHAR1  [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]
107 FILENAMECHAR1   [_a-zA-Z\/\.\\\$\_\~]
108 SYMBOLCHARN     [_a-zA-Z\/\.\\\$\_\~0-9]
109 FILENAMECHAR    [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~]
110 WILDCHAR        [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*]
111 WHITE           [ \t\n\r]+
113 NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]
115 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*
116 V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
118 %s SCRIPT
119 %s EXPRESSION
120 %s BOTH
121 %s DEFSYMEXP
122 %s MRI
123 %s VERS_START
124 %s VERS_SCRIPT
125 %s VERS_NODE
128   if (parser_input != input_selected)
129     {
130       /* The first token of the input determines the initial parser state.  */
131       input_type t = parser_input;
132       parser_input = input_selected;
133       switch (t)
134         {
135         case input_script: return INPUT_SCRIPT; break;
136         case input_mri_script: return INPUT_MRI_SCRIPT; break;
137         case input_version_script: return INPUT_VERSION_SCRIPT; break;
138         case input_defsym: return INPUT_DEFSYM; break;
139         default: abort ();
140         }
141     }
143 <BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT>"/*"   { comment (); }
146 <DEFSYMEXP>"-"                  { RTOKEN('-');}
147 <DEFSYMEXP>"+"                  { RTOKEN('+');}
148 <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}*   { yylval.name = xstrdup (yytext); return NAME; }
149 <DEFSYMEXP>"="                  { RTOKEN('='); }
151 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
152                                 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16);
153                                 yylval.bigint.str = NULL;
154                                 return INT;
155                         }
157 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) {
158                                    int ibase ;
159                                    switch (yytext[yyleng - 1]) {
160                                     case 'X':
161                                     case 'x':
162                                     case 'H':
163                                     case 'h':
164                                      ibase = 16;
165                                      break;
166                                     case 'O':
167                                     case 'o':
168                                      ibase = 8;
169                                      break;
170                                     case 'B':
171                                     case 'b':
172                                      ibase = 2;
173                                      break;
174                                     default:
175                                      ibase = 10;
176                                    }
177                                    yylval.integer = bfd_scan_vma (yytext, 0,
178                                                                   ibase);
179                                    yylval.bigint.str = NULL;
180                                    return INT;
181                                  }
182 <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? {
183                                   char *s = yytext;
184                                   int ibase = 0;
186                                   if (*s == '$')
187                                     {
188                                       ++s;
189                                       ibase = 16;
190                                     }
191                                   yylval.integer = bfd_scan_vma (s, 0, ibase);
192                                   yylval.bigint.str = NULL;
193                                   if (yytext[yyleng - 1] == 'M'
194                                       || yytext[yyleng - 1] == 'm')
195                                     {
196                                       yylval.integer *= 1024 * 1024;
197                                     }
198                                   else if (yytext[yyleng - 1] == 'K'
199                                       || yytext[yyleng - 1]=='k')
200                                     {
201                                       yylval.integer *= 1024;
202                                     }
203                                   else if (yytext[0] == '0'
204                                            && (yytext[1] == 'x'
205                                                || yytext[1] == 'X'))
206                                     {
207                                       yylval.bigint.str = xstrdup (yytext + 2);
208                                     }
209                                   return INT;
210                                 }
211 <BOTH,SCRIPT,EXPRESSION,MRI>"]"         { RTOKEN(']');}
212 <BOTH,SCRIPT,EXPRESSION,MRI>"["         { RTOKEN('[');}
213 <BOTH,SCRIPT,EXPRESSION,MRI>"<<="       { RTOKEN(LSHIFTEQ);}
214 <BOTH,SCRIPT,EXPRESSION,MRI>">>="       { RTOKEN(RSHIFTEQ);}
215 <BOTH,SCRIPT,EXPRESSION,MRI>"||"        { RTOKEN(OROR);}
216 <BOTH,SCRIPT,EXPRESSION,MRI>"=="        { RTOKEN(EQ);}
217 <BOTH,SCRIPT,EXPRESSION,MRI>"!="        { RTOKEN(NE);}
218 <BOTH,SCRIPT,EXPRESSION,MRI>">="        { RTOKEN(GE);}
219 <BOTH,SCRIPT,EXPRESSION,MRI>"<="        { RTOKEN(LE);}
220 <BOTH,SCRIPT,EXPRESSION,MRI>"<<"        { RTOKEN(LSHIFT);}
221 <BOTH,SCRIPT,EXPRESSION,MRI>">>"        { RTOKEN(RSHIFT);}
222 <BOTH,SCRIPT,EXPRESSION,MRI>"+="        { RTOKEN(PLUSEQ);}
223 <BOTH,SCRIPT,EXPRESSION,MRI>"-="        { RTOKEN(MINUSEQ);}
224 <BOTH,SCRIPT,EXPRESSION,MRI>"*="        { RTOKEN(MULTEQ);}
225 <BOTH,SCRIPT,EXPRESSION,MRI>"/="        { RTOKEN(DIVEQ);}
226 <BOTH,SCRIPT,EXPRESSION,MRI>"&="        { RTOKEN(ANDEQ);}
227 <BOTH,SCRIPT,EXPRESSION,MRI>"|="        { RTOKEN(OREQ);}
228 <BOTH,SCRIPT,EXPRESSION,MRI>"&&"        { RTOKEN(ANDAND);}
229 <BOTH,SCRIPT,EXPRESSION,MRI>">"         { RTOKEN('>');}
230 <BOTH,SCRIPT,EXPRESSION,MRI>","         { RTOKEN(',');}
231 <BOTH,SCRIPT,EXPRESSION,MRI>"&"         { RTOKEN('&');}
232 <BOTH,SCRIPT,EXPRESSION,MRI>"|"         { RTOKEN('|');}
233 <BOTH,SCRIPT,EXPRESSION,MRI>"~"         { RTOKEN('~');}
234 <BOTH,SCRIPT,EXPRESSION,MRI>"!"         { RTOKEN('!');}
235 <BOTH,SCRIPT,EXPRESSION,MRI>"?"         { RTOKEN('?');}
236 <BOTH,SCRIPT,EXPRESSION,MRI>"*"         { RTOKEN('*');}
237 <BOTH,SCRIPT,EXPRESSION,MRI>"+"         { RTOKEN('+');}
238 <BOTH,SCRIPT,EXPRESSION,MRI>"-"         { RTOKEN('-');}
239 <BOTH,SCRIPT,EXPRESSION,MRI>"/"         { RTOKEN('/');}
240 <BOTH,SCRIPT,EXPRESSION,MRI>"%"         { RTOKEN('%');}
241 <BOTH,SCRIPT,EXPRESSION,MRI>"<"         { RTOKEN('<');}
242 <BOTH,SCRIPT,EXPRESSION,MRI>"="          { RTOKEN('=');}
243 <BOTH,SCRIPT,EXPRESSION,MRI>"}"                 { RTOKEN('}') ; }
244 <BOTH,SCRIPT,EXPRESSION,MRI>"{"                 { RTOKEN('{'); }
245 <BOTH,SCRIPT,EXPRESSION,MRI>")"                 { RTOKEN(')');}
246 <BOTH,SCRIPT,EXPRESSION,MRI>"("                 { RTOKEN('(');}
247 <BOTH,SCRIPT,EXPRESSION,MRI>":"         { RTOKEN(':'); }
248 <BOTH,SCRIPT,EXPRESSION,MRI>";"         { RTOKEN(';');}
249 <BOTH,SCRIPT>"MEMORY"           { RTOKEN(MEMORY);}
250 <BOTH,SCRIPT>"ORIGIN"           { RTOKEN(ORIGIN);}
251 <BOTH,SCRIPT>"VERSION"          { RTOKEN(VERSIONK);}
252 <EXPRESSION,BOTH,SCRIPT>"BLOCK"         { RTOKEN(BLOCK);}
253 <EXPRESSION,BOTH,SCRIPT>"BIND"          { RTOKEN(BIND);}
254 <BOTH,SCRIPT>"LENGTH"           { RTOKEN(LENGTH);}
255 <EXPRESSION,BOTH,SCRIPT>"ALIGN"                 { RTOKEN(ALIGN_K);}
256 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN"    { RTOKEN(DATA_SEGMENT_ALIGN);}
257 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END"      { RTOKEN(DATA_SEGMENT_END);}
258 <EXPRESSION,BOTH,SCRIPT>"ADDR"                  { RTOKEN(ADDR);}
259 <EXPRESSION,BOTH,SCRIPT>"LOADADDR"              { RTOKEN(LOADADDR);}
260 <EXPRESSION,BOTH>"MAX"                  { RTOKEN(MAX_K); }
261 <EXPRESSION,BOTH>"MIN"                  { RTOKEN(MIN_K); }
262 <EXPRESSION,BOTH>"ASSERT"               { RTOKEN(ASSERT_K); }
263 <BOTH,SCRIPT>"ENTRY"                    { RTOKEN(ENTRY);}
264 <BOTH,SCRIPT,MRI>"EXTERN"               { RTOKEN(EXTERN);}
265 <EXPRESSION,BOTH,SCRIPT>"NEXT"                  { RTOKEN(NEXT);}
266 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers"        { RTOKEN(SIZEOF_HEADERS);}
267 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"        { RTOKEN(SIZEOF_HEADERS);}
268 <BOTH,SCRIPT>"MAP"                      { RTOKEN(MAP);}
269 <EXPRESSION,BOTH,SCRIPT>"SIZEOF"                { RTOKEN(SIZEOF);}
270 <BOTH,SCRIPT>"TARGET"           { RTOKEN(TARGET_K);}
271 <BOTH,SCRIPT>"SEARCH_DIR"               { RTOKEN(SEARCH_DIR);}
272 <BOTH,SCRIPT>"OUTPUT"           { RTOKEN(OUTPUT);}
273 <BOTH,SCRIPT>"INPUT"                    { RTOKEN(INPUT);}
274 <EXPRESSION,BOTH,SCRIPT>"GROUP"         { RTOKEN(GROUP);}
275 <EXPRESSION,BOTH,SCRIPT>"DEFINED"               { RTOKEN(DEFINED);}
276 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"    { RTOKEN(CREATE_OBJECT_SYMBOLS);}
277 <BOTH,SCRIPT>"CONSTRUCTORS"             { RTOKEN( CONSTRUCTORS);}
278 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);}
279 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);}
280 <BOTH,SCRIPT>"SECTIONS"         { RTOKEN(SECTIONS);}
281 <BOTH,SCRIPT>"FILL"                     { RTOKEN(FILL);}
282 <BOTH,SCRIPT>"STARTUP"          { RTOKEN(STARTUP);}
283 <BOTH,SCRIPT>"OUTPUT_FORMAT"            { RTOKEN(OUTPUT_FORMAT);}
284 <BOTH,SCRIPT>"OUTPUT_ARCH"              { RTOKEN( OUTPUT_ARCH);}
285 <BOTH,SCRIPT>"HLL"                      { RTOKEN(HLL);}
286 <BOTH,SCRIPT>"SYSLIB"           { RTOKEN(SYSLIB);}
287 <BOTH,SCRIPT>"FLOAT"                    { RTOKEN(FLOAT);}
288 <BOTH,SCRIPT>"QUAD"                     { RTOKEN( QUAD);}
289 <BOTH,SCRIPT>"SQUAD"                    { RTOKEN( SQUAD);}
290 <BOTH,SCRIPT>"LONG"                     { RTOKEN( LONG);}
291 <BOTH,SCRIPT>"SHORT"                    { RTOKEN( SHORT);}
292 <BOTH,SCRIPT>"BYTE"                     { RTOKEN( BYTE);}
293 <BOTH,SCRIPT>"NOFLOAT"          { RTOKEN(NOFLOAT);}
294 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS"   { RTOKEN(NOCROSSREFS);}
295 <BOTH,SCRIPT>"OVERLAY"                  { RTOKEN(OVERLAY); }
296 <BOTH,SCRIPT>"SORT"                     { RTOKEN(SORT); }
297 <EXPRESSION,BOTH,SCRIPT>"NOLOAD"        { RTOKEN(NOLOAD);}
298 <EXPRESSION,BOTH,SCRIPT>"DSECT"         { RTOKEN(DSECT);}
299 <EXPRESSION,BOTH,SCRIPT>"COPY"          { RTOKEN(COPY);}
300 <EXPRESSION,BOTH,SCRIPT>"INFO"          { RTOKEN(INFO);}
301 <EXPRESSION,BOTH,SCRIPT>"OVERLAY"       { RTOKEN(OVERLAY);}
302 <BOTH,SCRIPT>"o"                        { RTOKEN(ORIGIN);}
303 <BOTH,SCRIPT>"org"                      { RTOKEN(ORIGIN);}
304 <BOTH,SCRIPT>"l"                        { RTOKEN( LENGTH);}
305 <BOTH,SCRIPT>"len"                      { RTOKEN( LENGTH);}
306 <BOTH,SCRIPT>"INCLUDE"                  { RTOKEN(INCLUDE);}
307 <BOTH,SCRIPT>"PHDRS"                    { RTOKEN (PHDRS); }
308 <EXPRESSION,BOTH,SCRIPT>"AT"                    { RTOKEN(AT);}
309 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN"              { RTOKEN(SUBALIGN);}
310 <EXPRESSION,BOTH,SCRIPT>"PROVIDE"               { RTOKEN(PROVIDE); }
311 <EXPRESSION,BOTH,SCRIPT>"KEEP"          { RTOKEN(KEEP); }
312 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE"        { RTOKEN(EXCLUDE_FILE); }
313 <MRI>"#".*\n?                   { ++ lineno; }
314 <MRI>"\n"                       { ++ lineno;  RTOKEN(NEWLINE); }
315 <MRI>"*".*                      { /* Mri comment line */ }
316 <MRI>";".*                      { /* Mri comment line */ }
317 <MRI>"END"                      { RTOKEN(ENDWORD); }
318 <MRI>"ALIGNMOD"         { RTOKEN(ALIGNMOD);}
319 <MRI>"ALIGN"            { RTOKEN(ALIGN_K);}
320 <MRI>"CHIP"                     { RTOKEN(CHIP); }
321 <MRI>"BASE"                     { RTOKEN(BASE); }
322 <MRI>"ALIAS"                     { RTOKEN(ALIAS); }
323 <MRI>"TRUNCATE"                     { RTOKEN(TRUNCATE); }
324 <MRI>"LOAD"                     { RTOKEN(LOAD); }
325 <MRI>"PUBLIC"                   { RTOKEN(PUBLIC); }
326 <MRI>"ORDER"                    { RTOKEN(ORDER); }
327 <MRI>"NAME"                     { RTOKEN(NAMEWORD); }
328 <MRI>"FORMAT"                   { RTOKEN(FORMAT); }
329 <MRI>"CASE"                     { RTOKEN(CASE); }
330 <MRI>"START"                    { RTOKEN(START); }
331 <MRI>"LIST".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
332 <MRI>"SECT"                     { RTOKEN(SECT); }
333 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE"                  { RTOKEN(ABSOLUTE); }
334 <MRI>"end"                      { RTOKEN(ENDWORD); }
335 <MRI>"alignmod"         { RTOKEN(ALIGNMOD);}
336 <MRI>"align"            { RTOKEN(ALIGN_K);}
337 <MRI>"chip"                     { RTOKEN(CHIP); }
338 <MRI>"base"                     { RTOKEN(BASE); }
339 <MRI>"alias"                     { RTOKEN(ALIAS); }
340 <MRI>"truncate"                     { RTOKEN(TRUNCATE); }
341 <MRI>"load"                     { RTOKEN(LOAD); }
342 <MRI>"public"                   { RTOKEN(PUBLIC); }
343 <MRI>"order"                    { RTOKEN(ORDER); }
344 <MRI>"name"                     { RTOKEN(NAMEWORD); }
345 <MRI>"format"                   { RTOKEN(FORMAT); }
346 <MRI>"case"                     { RTOKEN(CASE); }
347 <MRI>"extern"                   { RTOKEN(EXTERN); }
348 <MRI>"start"                    { RTOKEN(START); }
349 <MRI>"list".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
350 <MRI>"sect"                     { RTOKEN(SECT); }
351 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute"                  { RTOKEN(ABSOLUTE); }
353 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}*  {
354 /* Filename without commas, needed to parse mri stuff */
355                                  yylval.name = xstrdup (yytext);
356                                   return NAME;
357                                 }
360 <BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}* {
361                                  yylval.name = xstrdup (yytext);
362                                   return NAME;
363                                 }
364 <BOTH,EXPRESSION>"-l"{FILENAMECHAR}+ {
365                                   yylval.name = xstrdup (yytext + 2);
366                                   return LNAME;
367                                 }
368 <SCRIPT>{WILDCHAR}* {
369                 /* Annoyingly, this pattern can match comments, and we have
370                    longest match issues to consider.  So if the first two
371                    characters are a comment opening, put the input back and
372                    try again.  */
373                 if (yytext[0] == '/' && yytext[1] == '*')
374                   {
375                     yyless (2);
376                     comment ();
377                   }
378                 else
379                   {
380                     yylval.name = xstrdup (yytext);
381                     return NAME;
382                   }
383         }
385 <EXPRESSION,BOTH,SCRIPT,VERS_NODE>"\""[^\"]*"\"" {
386                                         /* No matter the state, quotes
387                                            give what's inside */
388                                         yylval.name = xstrdup (yytext + 1);
389                                         yylval.name[yyleng - 2] = 0;
390                                         return NAME;
391                                 }
392 <BOTH,SCRIPT,EXPRESSION>"\n"            { lineno++;}
393 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+    { }
395 <VERS_NODE,VERS_SCRIPT>[:,;]    { return *yytext; }
397 <VERS_NODE>global               { RTOKEN(GLOBAL); }
399 <VERS_NODE>local                { RTOKEN(LOCAL); }
401 <VERS_NODE>extern               { RTOKEN(EXTERN); }
403 <VERS_NODE>{V_IDENTIFIER}       { yylval.name = xstrdup (yytext);
404                                   return VERS_IDENTIFIER; }
406 <VERS_SCRIPT>{V_TAG}            { yylval.name = xstrdup (yytext);
407                                   return VERS_TAG; }
409 <VERS_START>"{"                 { BEGIN(VERS_SCRIPT); return *yytext; }
411 <VERS_SCRIPT>"{"                { BEGIN(VERS_NODE);
412                                   vers_node_nesting = 0;
413                                   return *yytext;
414                                 }
415 <VERS_SCRIPT>"}"                { return *yytext; }
416 <VERS_NODE>"{"                  { vers_node_nesting++; return *yytext; }
417 <VERS_NODE>"}"                  { if (--vers_node_nesting < 0)
418                                     BEGIN(VERS_SCRIPT);
419                                   return *yytext;
420                                 }
422 <VERS_START,VERS_NODE,VERS_SCRIPT>[\n]          { lineno++; }
424 <VERS_START,VERS_NODE,VERS_SCRIPT>#.*           { /* Eat up comments */ }
426 <VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+      { /* Eat up whitespace */ }
428 <<EOF>> {
429   include_stack_ptr--;
431   if (include_stack_ptr == 0)
432   {
433     yyterminate ();
434   }
435   else
436   {
437     yy_switch_to_buffer (include_stack[include_stack_ptr]);
438   }
440   ldfile_input_filename = file_name_stack[include_stack_ptr - 1];
441   lineno = lineno_stack[include_stack_ptr];
443   return END;
446 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>.  lex_warn_invalid (" in script", yytext);
447 <EXPRESSION,DEFSYMEXP,BOTH>.    lex_warn_invalid (" in expression", yytext);
452 /* Switch flex to reading script file NAME, open on FILE,
453    saving the current input info on the include stack.  */
455 void
456 lex_push_file (FILE *file, const char *name)
458   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
459     {
460       einfo ("%F:includes nested too deeply\n");
461     }
462   file_name_stack[include_stack_ptr] = name;
463   lineno_stack[include_stack_ptr] = lineno;
464   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
466   include_stack_ptr++;
467   lineno = 1;
468   yyin = file;
469   yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE));
472 /* Return a newly created flex input buffer containing STRING,
473    which is SIZE bytes long.  */
475 static YY_BUFFER_STATE
476 yy_create_string_buffer (const char *string, size_t size)
478   YY_BUFFER_STATE b;
480   /* Calls to m-alloc get turned by sed into xm-alloc.  */
481   b = malloc (sizeof (struct yy_buffer_state));
482   b->yy_input_file = 0;
483   b->yy_buf_size = size;
485   /* yy_ch_buf has to be 2 characters longer than the size given because
486      we need to put in 2 end-of-buffer characters.  */
487   b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3));
489   b->yy_ch_buf[0] = '\n';
490   strcpy (b->yy_ch_buf+1, string);
491   b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR;
492   b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR;
493   b->yy_n_chars = size+1;
494   b->yy_buf_pos = &b->yy_ch_buf[1];
496   b->yy_is_our_buffer = 1;
497   b->yy_is_interactive = 0;
498   b->yy_at_bol = 1;
499   b->yy_fill_buffer = 0;
501   /* flex 2.4.7 changed the interface.  FIXME: We should not be using
502      a flex internal interface in the first place!  */
503 #ifdef YY_BUFFER_NEW
504   b->yy_buffer_status = YY_BUFFER_NEW;
505 #else
506   b->yy_eof_status = EOF_NOT_SEEN;
507 #endif
509   return b;
512 /* Switch flex to reading from STRING, saving the current input info
513    on the include stack.  */
515 void
516 lex_redirect (const char *string)
518   YY_BUFFER_STATE tmp;
520   yy_init = 0;
521   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
522     {
523       einfo("%F: macros nested too deeply\n");
524     }
525   file_name_stack[include_stack_ptr] = "redirect";
526   lineno_stack[include_stack_ptr] = lineno;
527   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
528   include_stack_ptr++;
529   lineno = 1;
530   tmp = yy_create_string_buffer (string, strlen (string));
531   yy_switch_to_buffer (tmp);
534 /* Functions to switch to a different flex start condition,
535    saving the current start condition on `state_stack'.  */
537 static int state_stack[MAX_INCLUDE_DEPTH * 2];
538 static int *state_stack_p = state_stack;
540 void
541 ldlex_script (void)
543   *(state_stack_p)++ = yy_start;
544   BEGIN (SCRIPT);
547 void
548 ldlex_mri_script (void)
550   *(state_stack_p)++ = yy_start;
551   BEGIN (MRI);
554 void
555 ldlex_version_script (void)
557   *(state_stack_p)++ = yy_start;
558   BEGIN (VERS_START);
561 void
562 ldlex_version_file (void)
564   *(state_stack_p)++ = yy_start;
565   BEGIN (VERS_SCRIPT);
568 void
569 ldlex_defsym (void)
571   *(state_stack_p)++ = yy_start;
572   BEGIN (DEFSYMEXP);
575 void
576 ldlex_expression (void)
578   *(state_stack_p)++ = yy_start;
579   BEGIN (EXPRESSION);
582 void
583 ldlex_both (void)
585   *(state_stack_p)++ = yy_start;
586   BEGIN (BOTH);
589 void
590 ldlex_popstate (void)
592   yy_start = *(--state_stack_p);
596 /* Place up to MAX_SIZE characters in BUF and return in *RESULT
597    either the number of characters read, or 0 to indicate EOF.  */
599 static void
600 yy_input (char *buf, int *result, int max_size)
602   *result = 0;
603   if (YY_CURRENT_BUFFER->yy_input_file)
604     {
605       if (yyin)
606         {
607           *result = fread (buf, 1, max_size, yyin);
608           if (*result < max_size && ferror (yyin))
609             einfo ("%F%P: read in flex scanner failed\n");
610         }
611     }
614 /* Eat the rest of a C-style comment.  */
616 static void
617 comment (void)
619   int c;
621   while (1)
622   {
623     c = input();
624     while (c != '*' && c != EOF)
625     {
626       if (c == '\n')
627         lineno++;
628       c = input();
629     }
631     if (c == '*')
632     {
633       c = input();
634       while (c == '*')
635        c = input();
636       if (c == '/')
637        break;                   /* found the end */
638     }
640     if (c == '\n')
641       lineno++;
643     if (c == EOF)
644     {
645       einfo( "%F%P: EOF in comment\n");
646       break;
647     }
648   }
651 /* Warn the user about a garbage character WHAT in the input
652    in context WHERE.  */
654 static void
655 lex_warn_invalid (char *where, char *what)
657   char buf[5];
659   /* If we have found an input file whose format we do not recognize,
660      and we are therefore treating it as a linker script, and we find
661      an invalid character, then most likely this is a real object file
662      of some different format.  Treat it as such.  */
663   if (ldfile_assumed_script)
664     {
665       bfd_set_error (bfd_error_file_not_recognized);
666       einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename);
667     }
669   if (! ISPRINT (*what))
670     {
671       sprintf (buf, "\\%03o", (unsigned int) *what);
672       what = buf;
673     }
675   einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where);